Heater Cores and Blower Fans
1995-1999 Dodge & Plymouth Neons
Jeep Liberty
Dog Breeds

Your heater works on the fan switch 123 but the fan will not come on at all on 4 any ideas why it does't come on on 4 you have a 2002 jeep liberty thanks bob?



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Either the switch itself is defective, or more than likely the Blower Motor Resistor Pack is defective. This is a common symptom of a defective Resistor Pack.